diff options
Diffstat (limited to 'src/charts/barchart/vertical/bar/barchartitem.cpp')
-rw-r--r-- | src/charts/barchart/vertical/bar/barchartitem.cpp | 125 |
1 files changed, 125 insertions, 0 deletions
diff --git a/src/charts/barchart/vertical/bar/barchartitem.cpp b/src/charts/barchart/vertical/bar/barchartitem.cpp new file mode 100644 index 00000000..86b63045 --- /dev/null +++ b/src/charts/barchart/vertical/bar/barchartitem.cpp @@ -0,0 +1,125 @@ +/**************************************************************************** +** +** Copyright (C) 2014 Digia Plc +** All rights reserved. +** For any questions to Digia, please use contact form at http://qt.digia.com +** +** This file is part of the Qt Enterprise Charts Add-on. +** +** $QT_BEGIN_LICENSE$ +** Licensees holding valid Qt Enterprise licenses may use this file in +** accordance with the Qt Enterprise License Agreement provided with the +** Software or, alternatively, in accordance with the terms contained in +** a written agreement between you and Digia. +** +** If you have questions regarding the use of this file, please use +** contact form at http://qt.digia.com +** $QT_END_LICENSE$ +** +****************************************************************************/ + +#include "barchartitem_p.h" +#include "bar_p.h" +#include "qabstractbarseries_p.h" +#include "qbarset.h" +#include "qbarset_p.h" + +QT_CHARTS_BEGIN_NAMESPACE + +BarChartItem::BarChartItem(QAbstractBarSeries *series, QGraphicsItem* item) : + AbstractBarChartItem(series, item) +{ + connect(series, SIGNAL(labelsPositionChanged(QAbstractBarSeries::LabelsPosition)), + this, SLOT(handleLabelsPositionChanged())); + connect(series, SIGNAL(labelsFormatChanged(QString)), this, SLOT(positionLabels())); +} + +void BarChartItem::initializeLayout() +{ + qreal categoryCount = m_series->d_func()->categoryCount(); + qreal setCount = m_series->count(); + qreal barWidth = m_series->d_func()->barWidth(); + + m_layout.clear(); + for(int category = 0; category < categoryCount; category++) { + for (int set = 0; set < setCount; set++) { + QRectF rect; + QPointF topLeft; + QPointF bottomRight; + + if (domain()->type() == AbstractDomain::XLogYDomain || domain()->type() == AbstractDomain::LogXLogYDomain) { + topLeft = domain()->calculateGeometryPoint(QPointF(category - barWidth / 2 + set/setCount * barWidth, domain()->minY()), m_validData); + bottomRight = domain()->calculateGeometryPoint(QPointF(category - barWidth / 2 + (set + 1)/setCount * barWidth, domain()->minY()), m_validData); + } else { + topLeft = domain()->calculateGeometryPoint(QPointF(category - barWidth / 2 + set/setCount * barWidth, 0), m_validData); + bottomRight = domain()->calculateGeometryPoint(QPointF(category - barWidth / 2 + (set + 1)/setCount * barWidth, 0), m_validData); + } + + if (!m_validData) + return; + rect.setTopLeft(topLeft); + rect.setBottomRight(bottomRight); + m_layout.append(rect.normalized()); + } + } +} + +QVector<QRectF> BarChartItem::calculateLayout() +{ + QVector<QRectF> layout; + + // Use temporary qreals for accuracy + qreal categoryCount = m_series->d_func()->categoryCount(); + qreal setCount = m_series->count(); + qreal barWidth = m_series->d_func()->barWidth(); + + for(int category = 0; category < categoryCount; category++) { + for (int set = 0; set < setCount; set++) { + qreal value = m_series->barSets().at(set)->at(category); + QRectF rect; + QPointF topLeft = domain()->calculateGeometryPoint(QPointF(category - barWidth / 2 + (set)/(setCount) * barWidth, value), m_validData); + QPointF bottomRight; + if (domain()->type() == AbstractDomain::XLogYDomain || domain()->type() == AbstractDomain::LogXLogYDomain) + bottomRight = domain()->calculateGeometryPoint(QPointF(category - barWidth / 2 + (set + 1)/(setCount) * barWidth, domain()->minY()), m_validData); + else + bottomRight = domain()->calculateGeometryPoint(QPointF(category - barWidth / 2 + (set + 1)/(setCount) * barWidth, 0), m_validData); + + rect.setTopLeft(topLeft); + rect.setBottomRight(bottomRight); + layout.append(rect.normalized()); + } + } + + return layout; +} + +void BarChartItem::handleLabelsPositionChanged() +{ + positionLabels(); +} + +void BarChartItem::positionLabels() +{ + for (int i = 0; i < m_layout.count(); i++) { + QGraphicsTextItem *label = m_labels.at(i); + qreal xPos = m_layout.at(i).center().x() - label->boundingRect().center().x(); + qreal yPos = 0; + + int offset = m_bars.at(i)->pen().width() / 2 + 2; + if (m_series->labelsPosition() == QAbstractBarSeries::LabelsCenter) + yPos = m_layout.at(i).center().y() - label->boundingRect().center().y(); + else if (m_series->labelsPosition() == QAbstractBarSeries::LabelsInsideEnd) + yPos = m_layout.at(i).top() - offset; + else if (m_series->labelsPosition() == QAbstractBarSeries::LabelsInsideBase) + yPos = m_layout.at(i).bottom() - label->boundingRect().height() + offset; + else if (m_series->labelsPosition() == QAbstractBarSeries::LabelsOutsideEnd) + yPos = m_layout.at(i).top() - label->boundingRect().height() + offset; + + label->setPos(xPos, yPos); + label->setZValue(zValue() + 1); + } +} + +#include "moc_barchartitem_p.cpp" + +QT_CHARTS_END_NAMESPACE |